Question

Possible Duplicate:
SQL Server – XQuery for XML

We have a xml column similar to this:

row1:

<a f="value1" b="value2" c="value3" d="value4"  />
<a f="value5" b="value6" c="value7" d="value8" Case="value9"  />

row2:

<a f="value1" b="value15" c="value16" d="value17"  />
<a f="value10" b="value11" c="value12" d="value13" Case="value14"  />

…

we want select rows that have f="value1".

Answer 1

SQL Fiddle

MS SQL Server 2008 Schema Setup:

create table YourTable
(
  XMLColumn xml
)

insert into YourTable values('<a f="value1" b="value2" c="value3" d="value4"  />
<a f="value5" b="value6" c="value7" d="value8" Case="value9"  />')

insert into YourTable values('<a f="value1" b="value15" c="value16" d="value17"  />
<a f="value10" b="value11" c="value12" d="value13" Case="value14"  />')

Query 1:

select *
from YourTable
where XMLColumn.exist('a[@f = "value1"]') = 1

Results:

|                                                                                                              XMLCOLUMN |
--------------------------------------------------------------------------------------------------------------------------
|         <a f="value1" b="value2" c="value3" d="value4"/><a f="value5" b="value6" c="value7" d="value8" Case="value9"/> |
| <a f="value1" b="value15" c="value16" d="value17"/><a f="value10" b="value11" c="value12" d="value13" Case="value14"/> |